Type-writing machine.



D. A. CARPENTER.

TYPE WRITING MACHINE.

APPucATrQN min AuG.2e.19'1o.

Patented Oct. 12, -1915.

3 SHEETS-SHEET! 'Im/ENTER QD Li HVIEATTERNEY D. A. CARPENTER.`

TYPE WRIIING MACHINE.

APPLlcATlon man Aue.26. 1910.

.Patented Oat. 12, V1915.

3 SHEETS-SHEET 2.

HIEATTURN'JEY p. A. CARPENTER.

TYPE WRITING MACHINE. APPLICATION PILE'IJ Aue.2r6. IsIo.

1,156,588. `Fammi oet, 12, i915.`

l 3 SHEETS-SHEET 3.

TS PATENT DANIEL A. CARPENTER, 0F NEW YURK, N. Y., ASSGNOR, BY MESNEASSIGNMENTS, TO REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, ACRPORATION' OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent'.

Patented Oct. 12, 1915.

Application filed August 26, 1%10. Serial No. 579,078.

To all whom it may concern.'

Be it known that l, Dimmi, A. (lAiirnN'inii, vcitizen of the UnitedStates, and resident of the borough of l\'lanhattan, city of New York,in the county of New York and State of New York,l ha ve. inventedcertain ne and useful liiiprovenieiits in '.lype-.lVriting Machines, ofwhich the following is a specification.

This invention relates particularly toiniproveinents in carriagearresting' means which constitutes part of the tabiilating` mechanism oftypewritiney iifiaehines, and includes shoek-absoibing means, theoi'lice 'of which is to absorb the shock and safely distribute thestress7 to which a n'iachine is sillijected when the carriage isarrestedafter it has run a .longklistanee .'lhc object of the inventionis to improve the shock-absorbiiig means.

The invention consists of the mechanism which is hereinafter describedand specified in the claims.

On the accompanying sheets of drawings,

on which like reference iiuiiiei'als designate like parts of differentviews, Figure 1 is ay side and sectional elevation of parts of a Monarchtypewritiiig.: machine embodying features ofVA the invention; Fig. 2, arear elevation of a-poi'tion of this machine; Fig'. 2l, a side andsectional elevation` on aii enlarged scale, of parts of the tahulatiiiefmechanism; Fig. 4, a plan of a fragment of the, machine#` and Fig. 5, abroken plan and horizontal section of mechanism which includes astop-bar and sliock-absorbiiig springs.

rlhe following` description of the invention. it is believed, wouldenable a mechanic,

skilled in the construction of typewrit-ing` machines, readily to applythe invention tov any of the well known type-ba r machines, as well asto the Monarch whether the stop-bar of the tabulatiiig' mechanism is onthe car vrThe platen-frame is connected by balls The frame ot' themachine is composed of the base l, posts 2 and top-plate 3. Thedogrocker 4 is pivotally mounted in the hanger 5, attached to thetop-plate, and is connected with the universal bar by the link 6, andnormally kept in the position in which it is shown iii Fig. 1 by thespring 7. The escapenient-wheel S is mounted on the. shaft 9 whichpasses through the standard 10, aftixed to the topplate, and on thisshaft, at its front end, is the piston 11. The platen-frame, in whichthe platen 1Q is mounted, is coniposed of the groov-ed rails 13 and 14and endplates 15, these rails and end-plates beinzgr a single castingland the rails being united by a web 1G as well as by the, end-plates.The feed-rack 1T is provided with arins 18 which extend between therails 13 and 14 and are pivoted to the end plates 15 by pivots 19, and

. between each arm 1S and the rail 13 is a coil springl 2() which bearsdowin Yard on the arm. 21 and 22 willi the grooved rails 23 and 24 whichare atlixed to the standards 25 and 26 that rest on and are attached tothe top-plate 3. The tabulator-key, 2T, is atlixed to the rod 2S, whichis pivotally connected to the angular lever 29, this lever being mountedon the screw 30 by which the lever is attached to the lug 31 projectingfrom the rear post Q at the right side of the frame. rlhe link :$2connects this lever with the lever 33. which is pivoted by a screw 34 toa lug 35 formed on the under side of the topplatc, the lever 33 havingon it a stop 3G. The iaclelifter 37 is pivoted to and supported by thelever 32%, the branches 38 extending on opposite sides of the bearing ofthe shaft 9 and being provided with shoes BS) which normally lie underand closeto but not in contact with the rack 17. The push-bar 40,extendingV iipward fromA the i'aclelifter and behind the rail 23, isriveted to the branches &8 of the.

' rack-lifter, this push-bar comprising' a yoke ,ment with the pinion11, the arms 1S of the rack turning' on the pivots 1S), so that then thecarriage is released from the control of the. escapement-mechanism, vandwill be drawn to the left by the carriage-motor un- .this machine,comprises a ttop-bar supportf ed by arms Which Vare afxed to thecarriage and in which the stop-bar is loosely mount-V4 ed, a set ofstops adjustably attached to the stop-bar, a combined stop and latchoperav tive 4to engage a stop of said set and thereby to lock thestop-bar to the frame of the ma chine, when the carriage reaches apredetermined position in a tabulating operation, and a spring mountedon the stopbar and forming a cushion, on wlhich the carriage acts at themoment when the stop-bar is locked tothe frame, and which commonly willallow the carriage to pass that position, the spring being eEective to'return the carriage to. that position. The stop-bar 42,

villustrated in Figsjl et seg. to 4 inclusive, extends through and fitsloosely .in the supporting arms 43 and 44 Which'are aiiixed to the backof the carriage, and on the bar at its ends are nuts 45 and -46. Thecollar 47 and volute spring 48 loosely surround the bar :between thevarm 44 and the nut 46.. This4 spring presses in opposite directionsonthe collar,- and nut 46, keeping the collar in contact with the arm 44,and the spring normally keeps the nut 45 in Contact with the arm 43(Fig. 4). The force exerted by this spring against the arm 44 is greaterthan that exerted by the carriage-motor on the carriage.l This stop-barisprevented from turning by means of the screw 49 set in the arm 44 andextending into the slot 50 in the bar. The stop 51 attached to the bar42 (Figs. 1 and 2) is the same as the columnstops which the Monarchmachine has long contained, and this and other similar stops forming aset fit in the slots in the stop-bar and are adjustable on thebar in theusual manner. i

The` combined stop and latch, above mentioned, are mounted in thesupporting bracket 52, which is fastened to the rail 23, this brackethaving arms 53 and 54 in which the shaft 55 has bearings, and. vbetweenf, which the combined stop and latch 56 and 57 fit on the shaft, and bywhich they are held close together and preve'ited from moving either tothe right or left. Thestop 56 is fastened to this shaft by the pin 58,and

the spring 59,.confined'in the cavity 60 in the arm 54 and surroundingthe shaft and extending into holes in the stop and arm, normally keepsthe arm 61 of 'the stop in contact with the back and top of the bracket52, so that the stop then is out of the path of the stops 51 on thestop-bar. The arm 61 extends over the push-bar40,A Whose upper end fitsloosely in the notch 62 Yformed in theunder side of the arm. The latch57 is attached loosely to the shaft 55 by the pin` 63 which passesthrough the slot 64 in the hub of the latch and is fast ini the shaft(Fig. 4). The spring 65, surrounding the hub of the. latch and bearingon the latch and the stop 56, normally keeps the front end of the slot64, .or that'end which is shown in Fig. 4 above the other, in contactwith the pin 63. The projection 66 on the right side of the latch taperson its under sidej67 up- Ward and backward from left t0 right. Thislatch, as well as `the stop 56fis normally'held out of the pathofthe'stops 51 on the stop-bar. The arrangement of the parts of thecarriage-arrestingmeans is such that when the tabulator-key 27 isactuated as above described, the stop" 56 is turned by the action of thepush-bar 40 on the arm 61 of the stopA to the position in :which thatstop Vis represented in Fig. 3, while the latch 57 turns with the. stop56v and at the end of their movement is-in such a position thatV a stop51 passing the latchfrom right to left so acts on the tapered surface 67a's to force the latch backward against the action of the spring 65, farenough to enable the stop 51 to clear the latch and strike the stop 56.

When a stop 51 thus passes the latch, the' spring 65 forces the latchbehind that stopl and then the stop which is attached to the stop-bar,and which cannotpass the stop 56,

in confined between theblatter stop and the ar isilockedto the latchsothat the stop frame of the machine.

To predetermine the positions inwhich the carriage shall come to restwhen its move- -ments are controlled by the tabulating mechanism, thestops 51 are\adjusted in the usual manner on the stop-bar. Then, if atabulating operation is performed, the pre1 determined position to beoccupied by the i ward its left end, andthe reaction of. the spring onVthe carriage arrests the latter without subjecting the machine to anyinjurious shock or stress. The spring also returns the carriageimmediately afterit is '120 and collar 47 sliding on the stop-bar to-farrested to said predetermined position, for i the force of this springis greater than that exerted on the carriage=by the carriage-motor, andany backward movement of the car-' the shoulders 75 and 76.

riage beyond that position is preventedl by the coi-action of the latch57, the stop 5l, the stop-bar. and the nut 45 on the arm 43. I`henpressure is removed from the tabulator-key, whereupon the rack 17rengages with the pinion 11 and the stop 56 and latch 57 return to theirnormal positions. Sometimes the carriage will be arrested, it' it hastraveled only a short distance, as soon as the stop 51 strikes the stop56, the spring 48 b'eing stiff enough then to prevent the carriage fromgoing farther, but if the 'carriage travels beyond the predeterminedposition through any number of letter spaces, or any fraction of aletter space, the spring will return the carriage instantly to thatposition.

Preferably provision should be made for the travel of the carriagethrough at least two or three letter spaces, as indicated by thedrawings.

The volute spring 48 is preferred to a common helical spring which mightbe substituted for it, because the resistance ofthe volute springincreases, and the force of its re-action diminishes, so fast as torender it apt more gently to arrest and repel the carriage than wouldthe helical spring.

Although the carriage-arresting mechanism above described illustratesfeaturesof the invention and Itheir operation, yet it does not fullyrepresent it. The arm 43 of a long or heavy carriage would be liable tostrike the nut 45 rather hard, for a spring 48, strong enough to arrestthe carriage after it had run a long distance, would" force it back,frequently, with considerable violence. lf, however, the stop-barrepresented in Fig. l5 is substituted. vfor that shown in the otherviews, then the mechanism will gently arrest not only the forward butalso' the backward movement of a carriage. The stop-bar G8 (Fig. 5) isprovided with notches in which tit adjustable stops 51, and

extends loosely through arms G9 and 7 0, and through bushings 71 and 72screwed into hubs 73 and 74 Vformed on these arms, which correspond tothe arms 4B and 44 above described, and are fast on the carriage. Thisstopbar has two oppositely facing shoulders 7 5 and 7G from whichproject parts 77 and 780i the bar` the diameter of these parts beingless than that of the part between the shoulders,and on the parts 77 and78 are' nuts 79 and 80, loose collars S1 'and S2, and volute springs 83and 84, the springs bearing against the collars and nuts, and normallykeeping the collars in contact with The bushings 71 and 72 are to beadjusted so that the distance between the planes of their outer ends orfaces will equal the distance between the planes of the shoulders and76, and consequently so that the collars 81 and 82 will normally restagainst the bushings as well as the shoulders. The screw 85, extendingthrough a hole in the arm 70 and into the slot SG in the bar (S8,)revents lthe bar from turning but allows it or the carriage to be movedhorizontally either to the left or right although the other is heldfast. This bar is so made and connected with the arms 69 and 70 that itthe bar is moved endwise while the carriage is kept at rest, it will berestored to its normal position either by the spring 83 or the spring84, and that if the bar is held still and the carriage is forced to theright or left, one of' these springs will return the carriage to theposition from which it was moved.

Now, it will be understood, when a tabulating operation is performed,the tabulating mechanism of the machine comprising the stop bar (38 andall ot' the other mechanism shown, except the stop bar 42, that the stopforced back by the spring 84 until the bushing 71 strikes the collarSl'and the collar 82 strikes the shoulder 76. If the bushing 71 strikesthe collar S1 hard the shock will be transmitted to the spring 383,which will gently arrest the backward movement of the carriage, andthen, if the carriage shall have passed the predetermined position inwhich it is desired to have it come to rest, the combined action of thespring 83 and the earriage motor will return the carriage to thatposition, which it will reach when the bushing 72 and collar 81 againmake Contact re spectively with the collar 82 and the shoul der 7 lVhenthe carriage drives the bush ing 71 against the collar y81 with lessforce than that which the spring 83 exerts on the collar, then thebackward movement of the carriage will be arrested as soon as the bush#ing strikes the collar, so that in operations wherein the carriage runsonly short distances, the action ot' the collar 81, spring 83' and uut79 is sul'xstantially the same as that of the nut 45 shown in Fig. 4.The force exerted by the spring S4 must be greater than that exerted bythe carriage motor, but the spring 83, whose. action is aided by thatot' the motor, may exert either more'vor less force than does themotor.'lhese'springs are preferably volute springs, their action being betterthan that ot' helical springs would be for reasons above stated. Thestop bar (3S can be adjusted longitudinally'by turning the bushings 71and 72 so as to move them equally in the same direction.

It is to be understood that-the invention claimedfcouldfbe embodied inmechanism differing in form .and details of construction from that whichhas been specifically described above.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine comprising tabuluting mechanism, thecombination in operative on the bar when it is thus moved in :eitherdirection to force it back 'to its natural position on its support.

2. In a. typewriting machine comprising tabulating mechanism, thecombination in, the tabulating inechanismof a stop-bar movable endwiseto change its position on its support, the bar being thus movable inboth directions from the position which it naturally occupies on itssupport, and automatic restoring means tending to prevent such amovement of the bar in either direction and operative on the bar when itis thus moved in either direction to force it back to its naturalposition on its support, said restoring means including a pair ofsprings.

3. In a typewritingmachine comprising tabulating mechanism, thecombination in the tabulating mechanism of astop-bar movable endwise tochange its position on its support, the bar being thus movable in bothdirections from the position which it naturally occupies on its support,and automatic restoring means tending to prevent such a `movement of thebar in either direction and operative on the bar when it is thus moved Ain either direction to force it back to its natural position on itssupport, said restoring means including a pair of voluto springs.

Il. Ink a typewriting machine, a stop-bar movable endwise on its supportin both directions from its normal position thereon, in combination withautomatic restoring means and adjusting devices.

5. In a typewriting machine, a stop-bar loosely mounted on its supportand having two oppositely-facing shoulders, combined with collarsfitting loosely on the bar and normally resting against said shouldersand against surfaces ofl said support, and with cushions bearing againstthe collars and tending to keep them in contact with said shoulders andsurfaces.

6. In a typewriting machine, a stop-bar loosely mounted on its supportand having tWo oppositely-facing shoulders, combined with collarsfitting loosely on the har and normally resting against said shoulders,ad-

7. In a typewriting machine, a stop-bar loosely mounted' on its supportand having I two oppositely-facing shoulders, combined with collarsfitting loosely on the bar and normally resting againstsaid shouldersand against surfaces of said support, and with springs mounted on thestop-barand bearing against the collars and tending to keep them incontact with said shoulders and surfaces. y I v 8. In a typewritingmachine, a stop-bar loosely-mounted on its support and having twooppositely-facing sh ulders combined with collars fitting loosel` on thebar and normally resting against said shoulders and against surfacesofsaid support, and with volute springs mounted on the stop-bar andbearing Aagainst the collars and tending to keep them in contact withsaid shoulders and surfaces.

9.'In a typewriting machine, a stop-b i' 't' loosely'mounted on itssupport and having? two oppositely-facing shoulders, combined withcollars fitting loosely on the barand A normally resting against saidshoulders, adjustable devices attached-to said support and havingsurfaces with which said collars normally make contact, and springsconfined between said collars and holding-devices on the bar, thesprings tending to keep the collars in contact with said shoulders andad.- justable devices. A

10. In atypewriting machine, a stop-bar loosely mounted on itssupportand having two oppositcly-facing shoulders, combine with collarsfitting loosely on the bar and normally resting against said shoulders,ad: `pistable devices attached to said sup ort' and having surfaces withwhich said col ars normally make contact, and volute springs confinedbetween said collars and holding-devices on the bar, the springs tendingto keepA the collars in contact with said shoulders and adjustabledevices.

l1. In a typewriting machine, 4a stop-bar.

mounted on the carriage and `movable end: wise on its support in bothdirections from its normal position thereon, in combination withautomatic restoring means, and means for locking the stop-bar to theframe when the carriage reaches a predetermined position in a tabulatingoperation.

I 12. Ina typewriting machine, a stop-bar mounted on the carriage andmovable endwise on its support in'both directions fromV its normalposition thereon, in combination with automatic iesoring means andadjusting devices, and means for looking the stop 'bar to he frame whenthe carriage reaches a, predetermined position in a tabulating op- 5eration. A

Signed ai; che borough of Manhattanl, city of New Yorka inythe countyof' New York,

and State of New Tfork, this 25th day of August, A. D, 1910.

DANEL A. CARPENTER.

